ArticleACS omega2025
Identification of the Mechanisms of a Localized Surface Plasmon Resonance Peak Blue Shift in Magnetic Field Pretreated ZnO/Ag Nanocomposites.
Article in ACS omega, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Zinc oxide-based nanocomposites are of great scientific interest due to their unique optical properties, making them promising materials for applications in plasmonic and sensor systems. In this study, we pay special attention to the analysis of the magnetic field-induced blue shift of the localized surface plasmon resonance (LSPR) peak in ZnO/Ag nanocomposites. This phenomenon was investigated because of its unexpected manifestation in nonmagnetic semiconductor-based systems that may have a potential for developing magnetically tunable plasmonic devices. ZnO/Ag nanocomposites were synthesized via photochemical reduction under ultraviolet irradiation. The LSPR spectral response was analyzed after ZnO NPs were exposed under an external magnetic field. The blue shift of the LSPR peak of ZnO/Ag nanocomposites observed in the magnetic field pretreated samples was thoroughly studied, and its possible physical mechanisms were critically discussed. Among the proposed explanations, one of the most probable mechanisms is the magnetic field-induced change in the refractive index of the ZnO nanoparticle (NP) surface, caused by magnetization effects. This surface feature is attributed to a high concentration of single-charged oxygen vacancies (
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